Gun rack for a vehicle



FIG. 1 is a top, front and left side perspective view of a gun rack for a vehicle showing my new design;

FIG. 2 is a reduced, right side elevational view;

FIG. 3 is a top plan view of FIG. 2;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a front elevational view thereof; and

FIG. 6 is a bottom plan view thereof. 

The ornamental design for a gun rack for a vehicle, as shown and described. 